[PATCH] org-agenda.el: Avoid dependency on subr-x

[Maxim Nikulin]

* lisp/org-agenda.el (org-agenda-highlight-todo): Do not use `string-empty-p'.

Restore compatibility with Emacs-24.3.
---
 lisp/org-agenda.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/org-agenda.el b/lisp/org-agenda.el
index c3fbabc01..b6cd895bc 100644
--- a/lisp/org-agenda.el
+++ b/lisp/org-agenda.el
@@ -7080,7 +7080,7 @@ The optional argument TYPE tells the agenda type."
            (setq x
                  (concat
                   (substring x 0 (match-end 1))
-                   (unless (string-empty-p org-agenda-todo-keyword-format)
+                   (unless (string= org-agenda-todo-keyword-format "")
                     (format org-agenda-todo-keyword-format
                             (match-string 2 x)))
                    ;; Remove `display' property as the icon could leak
-- 
2.25.1